package com.jwt.spring.login.form;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;
import org.springframework.web.servlet.ModelAndViewDefiningException;
import org.springframework.web.util.WebUtils;

import com.jwt.spring.login.session.UserSession;

public class SignonInterceptor extends HandlerInterceptorAdapter {
	public boolean preHandle(HttpServletRequest request,
			HttpServletResponse response, Object handler) throws Exception {
		UserSession userSession = (UserSession) WebUtils.getSessionAttribute(
				request, "userSession");
		if (userSession == null) {
			String url = request.getServletPath();
			String query = request.getQueryString();
			ModelAndView modelAndView = new ModelAndView("SignonForm");
			if (query != null) {
				modelAndView
						.addObject("signonForwardAction", url + "?" + query);
			} else {
				modelAndView.addObject("signonForwardAction", url);
			}
			throw new ModelAndViewDefiningException(modelAndView);
		} else {
			return true;
		}
	}

}
